CVE-2024-5878: Multiple Plugins <= (Various Versions) - Authenticated (Contributor+) Stored DOM-Based Cross-Site Scripting via SimpleLightbox JavaScript Library
Description
Multiple plugins for WordPress are vulnerable to Stored Cross-Site Scripting via the plugin's bundled SimpleLightbox JavaScript library (version 2.1.5) in various versions due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Classification
CVE ID: CVE-2024-5878
CVSS Base Severity: MEDIUM
CVSS Base Score: 6.4
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Problem Types
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')Affected Products
Vendor: aknieriem, smub
Product: Simplelightbox, Photo Gallery, Sliders, Proofing and Themes – NextGEN Gallery
Exploit Prediction Scoring System (EPSS)
EPSS Score: 0.03% (probability of being exploited)
EPSS Percentile: 8.33% (scored less or equal to compared to others)
EPSS Date: 2025-06-06 (when was this score calculated)
References
https://nvd.nist.gov/vuln/detail/CVE-2024-5878https://www.wordfence.com/threat-intel/vulnerabilities/id/bcbc8ce6-5eb7-4599-b844-72eb2ff3093c?source=cve
https://plugins.trac.wordpress.org/browser/nextgen-gallery/trunk/static/Lightbox/simplelightbox/nextgen_simple_lightbox_init.js
https://plugins.trac.wordpress.org/browser/simplelightbox/trunk/dist/simple-lightbox.js
https://plugins.trac.wordpress.org/changeset/3157076/nextgen-gallery